https://www.sg-connectors.com/product/instrument-cable/patch-cables-sgp-01.html By fixing the shielding layer on the cable, the grounding voltage drop on the transmitting and receiving sides can be easily adjusted. Special heat treatment is applied to the RCA plug to suppress the increase of impedance The optimal size considering the thickness of the cable conductor. There are advanced cables that are thicker and better, but if you are looking for more accurate sound, the thickness and impedance of the cable will greatly affect the sound quality, so it can be said that there is \"\"the best fineness\".